Properties of Gaussian Beam Propagating in Ring Resonator Sensor

Optical nutation in a gaussian beam resonator

2014 We examine the transient behaviour of a plane-spherical resonator driven by a continuous wave and filled by an optically thin gas which is suddenly switched on exact resonance with the driving field. Contrary to previous treatments, the axial and transversal field distributions and the molecular motions through the standing wave are taken into account. This is achieved by projecting the in...

Trimming of silicon ring resonator by electron beam induced compaction

We present a technique to trim the resonance of silicon ring resonators. The cladding oxide is compacted by electron beam bombardment, causing strain in the silicon lattice, which leads to a 5 nm resonance shift.

Tuneable Gaussian to flat-top resonator by amplitude beam shaping.

We outline a simple laser cavity comprising an opaque ring and a circular aperture that is capable of producing spatially tuneable laser modes, from a Gaussian beam to a Flat-top beam. The tuneability is achieved by varying the diameter of the aperture and thus requires no realignment of the cavity. We demonstrate this principle using a digital laser with an intra-cavity spatial light modulator...

Tunable polarization beam splitter based on optofluidic ring resonator.

An efficient polarization beam splitter (PBS) based on an optofluidic ring resonator (OFRR) is proposed and experimentally demonstrated. The PBS relies on the large effective refractive index difference between transverse-electric (TE) and transverse-magnetic (TM) polarization states, since the silica-microcapillary-based OFRR possesses a slab-like geometry configuration in the cross section th...

Beam quality changes of Gaussian Schell-model fields propagating through Gaussian apertures.